ci: rework compiling tests

Author: RebeccaStevens

.eslintrc.json

@@ -14,7 +14,13 @@
   "parserOptions": {
     "project": ["./tsconfig.json"]
   },
-  "ignorePatterns": ["/build/", "/coverage/", "/lib/", "/cz-adapter/**/*.js"],
+  "ignorePatterns": [
+    "/build/",
+    "/coverage/",
+    "/lib/",
+    "/tests-compiled/",
+    "/cz-adapter/**/*.js"
+  ],
   "rules": {
     "functional/prefer-immutable-types": "off",
     "@typescript-eslint/no-explicit-any": "warn",

.gitignore

@@ -1,6 +1,7 @@
 /lib/
 /build/
 /coverage/
+/tests-compiled/
 
 .nyc_output/
 

.prettierignore

@@ -2,6 +2,7 @@
 /lib/
 /build/
 /coverage/
+/tests-compiled/
 
 .nyc_output/
 

ava.config.mjs

@@ -11,14 +11,11 @@ function getBoolean(value) {
     : Boolean(asNumber);
 }
 
-const testAllFiles = getBoolean(process.env["TEST_ALL_FILES"]);
 const useCompiledTests = getBoolean(process.env["USE_COMPILED_TESTS"]);
 const onlyTestWorkFile = getBoolean(process.env["ONLY_TEST_WORK_FILE"]);
 
 const avaCommonConfig = {
-  files: testAllFiles
-    ? ["tests/rules/*.test.*"]
-    : onlyTestWorkFile
+  files: onlyTestWorkFile
     ? ["tests/rules/work.test.*"]
     : ["tests/**/!(work)*.test.*"],
   timeout: "5m",
@@ -33,6 +30,7 @@ const avaTsConfig = {
 
 const avaJsConfig = {
   ...avaCommonConfig,
+  files: avaCommonConfig.files.map((file) => `tests-compiled/${file}`),
 };
 
 export default useCompiledTests ? avaJsConfig : avaTsConfig;

knip.jsonc

@@ -3,7 +3,8 @@
   "entry": ["src/index.ts!", "tests/**/*.test.ts", "cz-adapter/index.ts"],
   "project": ["src/**/*.ts!", "tests/**/*.ts", "cz-adapter/**/*.ts"],
   "ignoreDependencies": [
-    "@typescript-eslint/eslint-plugin-disable-type-checked"
+    "@typescript-eslint/eslint-plugin-disable-type-checked",
+    "glob"
   ],
   "ignore": ["tests/fixture/file.ts"]
 }

package.json

@@ -46,7 +46,7 @@
   ],
   "scripts": {
     "build": "pnpm run build:node && pnpm run build:docs",
-    "build-tests": "rimraf build && node --no-warnings=ExperimentalWarning --loader=ts-paths-esm-loader/transpile-only --experimental-specifier-resolution=node scripts/compile-tests.mts",
+    "build-tests": "rimraf tests-compiled && rollup -c rollup.config.tests.ts --configPlugin @rollup/plugin-typescript",
     "build:docs": "eslint-doc-generator",
     "build:node": "rimraf lib && rollup -c rollup.config.ts --configPlugin @rollup/plugin-typescript",
     "cz": "git-cz",
@@ -128,6 +128,7 @@
     "eslint-plugin-sonarjs": "0.19.0",
     "eslint-plugin-unicorn": "48.0.0",
     "espree": "9.6.1",
+    "glob": "^10.3.3",
     "husky": "8.0.3",
     "knip": "2.15.5",
     "lint-staged": "13.2.3",
@@ -140,8 +141,6 @@
     "rollup-plugin-auto-external": "2.0.0",
     "semantic-release": "21.0.7",
     "ts-node": "10.9.1",
-    "ts-paths-esm-loader": "^1.4.3",
-    "tsc-prog": "2.2.1",
     "tsconfig-paths": "4.2.0",
     "tslib": "2.6.0",
     "typescript": "5.1.6",

pnpm-lock.yaml

@@ -0,0 +1,38 @@
+import rollupPluginCommonjs from "@rollup/plugin-commonjs";
+import rollupPluginJSON from "@rollup/plugin-json";
+import rollupPluginTypescript from "@rollup/plugin-typescript";
+import { glob } from "glob";
+import { defineConfig } from "rollup";
+import rollupPluginAutoExternal from "rollup-plugin-auto-external";
+
+const testFiles = await glob("./tests/**/*.test.ts");
+
+export default defineConfig({
+  input: Object.fromEntries(testFiles.map((file) => [file, file])),
+
+  output: [
+    {
+      sourcemap: false,
+      dir: "tests-compiled",
+      format: "cjs",
+    },
+  ],
+
+  plugins: [
+    rollupPluginAutoExternal(),
+    rollupPluginCommonjs(),
+    rollupPluginTypescript(),
+    rollupPluginJSON({
+      preferConst: true,
+    }),
+  ],
+
+  external: [],
+
+  treeshake: {
+    annotations: true,
+    moduleSideEffects: [],
+    propertyReadSideEffects: false,
+    unknownGlobalSideEffects: false,
+  },
+});

rollup.config.tests.ts

@@ -2,7 +2,7 @@ import path from "node:path";
 
 import { type RuleTesterConfig } from "@typescript-eslint/rule-tester";
 
-const fixturePath = path.join(__dirname, "../fixture");
+const fixturePath = path.join(process.cwd(), "tests/fixture");
 export const filename = path.join(fixturePath, "file.ts");
 
 const typescriptParser = require.resolve("@typescript-eslint/parser");